bids are invited for supply and etc of 400kv and below rating isolators supply-400kv, 3150a, 63ka for 1s, 3ph, hdb type isolator as per ts , supply-400kv, 3150a, 63ka for 1s, single phase, hdb type isolator as per ts , supply- 220kv, 3150a, 50ka for 1s, 3ph, bus transfer current switching duty, hdb type isolator as per ts , supply- 220kv, 1600a, 50ka for 1s, 3ph, bus transfer current switching duty, hdb type isolator as per ts , supply- 220kv, 1600a, 50ka for 1s, 3ph, hdb type isolator as per ts , supply-220kv, 1600a, 50ka for 1s, 3ph, bus transfer current switching duty, double break, tandem type isolator as per ts , supply-72.5kv, 25ka for 3s, 400a, 3ph, hdb type isolator as per ts , supply-36kv, 25ka for 3s, 400a, 3ph, hdb type isolator as per ts , services-400kv, supervision of erection testing and commissioning including alignment check of hdb type isolator and earthswitch , services-400kv, supervision of erection testing and commissioning including alignment check of single phase, hdb type isolator and es , services-220kv supervision of erection testing and commissioning including alignment check of 3ph, hdb type isolator , services-72.5kv, supervision of erection testing and commissioning including alignment check of hdb type isolator and earthswitch , services-36kv, supervision of erection testing and commissioning including alignment check of hdb type isolator and earthswitch , supply-145kv, 1250a, 40ka for 1s, 3ph, hdb type isolator as per ts , supply-145kv, 1250a, 40ka for 1s, 3ph, hdb, tandem type isolator as per ts , supply-36kv, 25ka for 3s, 400a,3ph, hdb type 1 55isolator as per ts , spares-400kv, 3150a, 63ka for 1s, for 1s, hdb type isolator - terminal pads , spares- 220kv, 1600a, 50ka for 1s, hdb type isolator - corona shield rings , spares-145kv, 1250a, 40ka for 1s, double break dbr type isolator -one complete pole with one es alongwith operating mechanism as per ts , spares-145kv, 1250a, 40ka for 1s, double break dbr type isolator -copper contact